/**
 * strictc - the Strict compiler
 * Copyright (C) 2008 David Olsson (vonolsson@gmail.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#if !defined(__NODE_H__)
#define __NODE_H__

class Visitor;

class Node {
public:
    Node() throw();
    virtual ~Node() {}
    
    const Node *parent() const throw();
    Node *parent() throw();
    void setParent(Node *parent) throw();
    
    const Node *nextSibling() const throw();
    Node *nextSibling() throw();
    void setNextSibling(Node *nextSibling) throw();
    
    virtual const Node *firstChild() const throw() = 0;
    virtual Node *firstChild() throw() = 0;
    
    virtual void preAccept(Visitor &visitor) throw() = 0;
    virtual void postAccept(Visitor &visitor) throw() = 0;
private:
    Node *m_parent;
    Node *m_nextSibling;
};

#endif
